Anatomy and Physiology of the Integument (PSY 125) PDF

Anatomy and Physiology of the Integument  STRUCTURE OF THE SKIN  Skin EPIDERMIS DERMIS SKIN APPENDAGES  DERMATOLOGY FUNCTIONS OF THE INTEGUMENTARY SYSTEM  SKIN  EPIDERMIS o o o o KERATINIZATION...

Anatomy and Physiology of the Integument  STRUCTURE OF THE SKIN  Skin EPIDERMIS DERMIS SKIN APPENDAGES  DERMATOLOGY FUNCTIONS OF THE INTEGUMENTARY SYSTEM  SKIN  EPIDERMIS o o o o KERATINIZATION  KERATINIZATION  dead EPIDERMAL LAYERS o o o o alive o EPIDERMAL LAYERS EPIDERMIS STAINED AND VIEWED WITH LIGHT MICROSCOPE  MELANOCYTES MELANOCYTES MELANOCYTES  STRATUM BASALE  STRATUM SPINOSUM  STRATUM GRANULOSUM  STRATUM CORNEUM  SKIN STRUCTURE COMPONENTS OF BASEMENT MEMBRANE BASEMENT MEMBRANE SKIN CANCERS  DERMIS  PAPILLARY LAYER o o o o  RETICULAR LAYER o o  STRUCTURES SKIN AND SUBCUTANEOUS LAYER DERMIS CELLS DERMIS  SUBCUTANEOUS FAT MERKEL CELL  ECCRINE AND APOCRINE SWEAT GLANDS SEBACEOUS GLAND  SKIN APPENDAGES ECCRINE / APOCRINE SWEAT GLANDS  ECCRINE SWEAT GLANDS o o o o  APOCRINE SWEAT GLANDS o o o o o  SEBACEOUS GLANDS SEBACEOUS GLANDS LANGER’S CLEAVAGE LINES  HAIR  HAIR ANATOMY o o o o o o  HAIR FOLLICLES  HAIR FOLLICLES HAIR FOLLICLE  HAIR FOLLICLE 175x Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. © The McGraw-Hill Companies, Inc./Al Telser, photographer  HAIR SHAFT 875x © CNRI/SPL/Photo Researchers, Inc Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.  HAIR SHAFT o o o o o o TYPES OF HAIR  ASSOCIATES OF THE HAIR COMPLEX  NAILS ANATOMY Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. HAIRLESS SKIN OF FINGERTIP 50x  Control center Hypothalamus detects the deviation from the set point and signals effector organs. Receptors Effectors Thermoreceptors Dermal blood vessels send signals to the dilate and sweat glands HOMEOSTATIC CONTROL OF control center. secrete. BODY TEMPERATURE Stimulus Response Body temperature rises Body heat is above normal. lost to surroundings, temperature drops toward normal. too high Normal body temperature 37°C (98.6°F) Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.  Normal body temperature 37°C (98.6°F) too low Stimulus Response Body temperature Body heat is conserved, HOMEOSTATIC CONTROL OF drops below normal. temperature rises toward normal. BODY TEMPERATURE Receptors Effectors Effectors Thermoreceptors Dermal blood Muscle send signals to the vessels constrict activity control center. and sweat glands generates remain inactive. body heat. Control center Hypothalamus detects the deviation from the set point and signals effector organs. If body temperature continues to drop, control center signals muscles to contract involuntarily.  PROBLEMS IN TEMPERATURE REGULATION  SKIN COLOR o o o o  SKIN CONDITIONS  SKIN COLOR o o o o  VITAMIN D  EPIDERMAL WOUND HEALING o o o o o EPIDERMAL WOUND HEALING  EPIDERMAL WOUND HEALING  Site of injury Blood cells (a) (b) WOUND HEALING Scab Blood clot (c) (d) (e) Scab Scar Scar tissue tissue (f) Fibroblasts (f) McGraw-Hill Companies, Inc. Permission required (g) Copyright © The for reproduction or display.  DEEP WOUND HEALING DEEP WOUND HEALING  RULE OF NINES  Anterior head 41/2% Anterior and posterior head and neck 41/2% and neck 41/2% 9% Posterior head and neck 41/2% Anterior and posterior upper Posterior Anterior extremities trunk trunk 18% Anterior upper 18% Anterior and 18% posterior trunk Posterior upper extremities 9% extremities 9% 41/2% 41/2% 36% 41/2% 41/2% Perineum 1% 9% 9% 9% 9% Anterior lower Anterior and Posterior lower extremities 18% posterior lower extremities 18% extremities 36% RULE OF NINES 100% Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.  Anatomy and Physiology of the Integument